pos_buttons/views/menus.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data> 
        
        <!-- Pedido de Venta -->
        <menuitem id="pos_buttons.new_sale" name="Nueva venta" parent="base.menu_sales" action="eiru_pos.pos_action" sequence="6"/>
        
        <!-- Presupuesto -->
        <menuitem id="pos_buttons.new_budget" name="Nuevo presupuesto" parent="base.menu_sales" action="eiru_pos.budget_action" sequence="7"/>
        
        <!-- Pedido de compra -->
        <menuitem id="pos_buttons.new_purchase" name="Nueva compra" parent="purchase.menu_procurement_management" action="eiru_purchases.purchases_action" sequence="7" />

        <!-- Gastos -->
        <menuitem id="pos_buttons.new_expense" name="Nuevo gasto" parent="purchase.menu_procurement_management" action="eiru_purchases.expenses_action" sequence="8" />  

        <!-- Historico de compras -->
		<record id="action_unified_purchase_order" model="ir.actions.act_window">
            <field name="name">Historico de Compras</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">purchase.order</field>
            <field name="view_type">form</field>
            <field name="view_id" ref="purchase.purchase_order_tree"/>
            <field name="view_mode">tree,form,calendar,graph</field>
            <field name="search_view_id" ref="purchase.view_purchase_order_filter"/>
        </record>

        <menuitem id="menu_unified_purchase_order"
                action="action_unified_purchase_order" parent="purchase.menu_procurement_management"
                sequence="1"/>

        <!-- Historico de ventas -->
         <record id="action_unified_order" model="ir.actions.act_window">
            <field name="name">Historico de Ventas</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">sale.order</field>
            <field name="view_type">form</field>
            <field name="view_id" ref="sale.view_quotation_tree"/>
            <field name="view_mode">tree,form,calendar,graph</field>
            <field name="search_view_id" ref="sale.view_sales_order_filter"/>
        </record>

        <menuitem id="menu_unified_order"
                action="action_unified_order" parent="base.menu_sales"
                sequence="2"/>
    </data>
</openerp>